Smulders, who attended the Avengers premiere in L.A. on Monday night, also described her new trick to dressing for the red carpet. “It’s tough being a girl sometimes,” she said, and explained how she rode in the car in just a T-shirt and Spanx and then when they neared the movie event's venue she finally donned her dress. "I mastered it! My girlfriend was the one who zipped me up as I’m planking in the backseat of the car.”

Sounds like a quick-change quite worthy of someone who plays a special agent!

Watch her explain the history of her name in the video above, and find out more about the on-the-go change here: